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S. UABELL.

Patented Sept. 9, 1884.

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I Unrrnn STATES SAMUEL G. OABELL, OF WASHINGTON, DISTRICT 'IO lrIILTON S. OABELL, OF QUINCY,

ANTl-INCRUSTATOR FOR STEAM-BOiLERS.

PATENT Orrrcno OF COLUMBIA, ASSIGNOR ILLINOIS, AND FLORA CABELL;

:SPECIFICATlON forming part of Letters Patent No. 304,989, dated September 9, 1884.

i Application tiled May 1, 1884. (X0 model.)

To all whom it may concern.-

Be it known that I, SAMUEL G. CABEL'L, of Washington, in the District of Columbia, have invented certain new and useful Improvements in ElectroMagnetic Anli-l'ncrustators; and I do hereby declare that the lbllowiiig is a full, clear, and exact description thereof, reference being had to the accompanying drawings;

The objectol." inyinvention isto prevent the lbi'nnttion and adhe ion of scale or intrastation in steam-boilers; and it consists in the combination, with the fines of a tubular boiler or other part of a boiler normally below the Water-line, of an electro'magnent.

The present invention is an improvement upon my previous patents for magnetic autiincrustators, and its distinguishing characteristic is that the magnet is carried bodily within the boiler down to and in contact with the tines or some other permanent fixture within the boiler, below the water-line.

In the drawings, Figure it represents a longitudinal section through a tubular boiler, showing within it, also in section, an electromagnet of the construction described in Lettors Patent granted to me June 25, 1867, No. 66,001..

A is a boiler of the tubular pattern; a, the lines, upon which anchored by means of wires 1) an electro-mngnet, I A water-tight tube or duct, l3, conducts the wires from. the battery through the steam chamber of the boiler to the magnet.

In use it has been ascertained that boilers provided with a magnet arranged as herein described and shown have to be cleaned or blown oft, atintervals less frequent than if the magnet were not in direct contact with the flue or ilncs of the boiler or-beneath the surface of the water.

40 My experience with aparticular set of boilan clectro-magnct, one pole'of the magnet be 5 ing applied to the llues or other part of the boiler below the water-linefaml the other to the shell of the boiler, substantially as described.

2. The combination of a steanrboiler and a compound electro-magnet, one pole of the magnot being applied to the lines or other part of the boiler below the water-line, and the other to the shell of the boiler, substantially as (le scribed.

In tcstiuumy that I claim the foregoing I- hereunto allix mysignature in the presence of two witnesses.

SAMUEL G. (.PJGLL. Witnesses:

WM. A. liosnxnnun', Mu'xrox b. Gun-Jun. 

